Perhaps you should try some spelling variations:
information century » information centers, information centre, information center
data communication » data communications
communication cost » communication costs, communication costa, communications costs
technologien fair » technologien fur, technologies fail, technologien als
fair information » fairs information, fur information, labor information
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
century case » century a
case data » cases data, base data, use data
cost 5.4 » costs 5.4, cost 2.4, cost 3.4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien fair information century case data communication cost 5.4 developing _ africa.*.